Science, Space and Technology News 2024
Researchers have made a breakthrough in observing the ice-liquid interface by using antifreeze and a refrigerated microscope. They discovered that ice in antifreeze remains flat with minimal structural changes compared to its rapid transformation in water. Credit: SciTechDaily.com
Ice in nature is surrounded by liquid most of the time, and therefore it is key to understand how ice and liquid interact. A Kobe University and Institute for Molecular Science study could now for the first time directly observe the precise shape of ice at the interface between ice and liquid – by using antifreeze and a refrigerated microscope.
To get closer to understanding how ice interacts with its surrounding liquid, researchers led by Kobe University’s Hiroshi Onishi decided to try the next best thing. He says: “We came up with the idea of measuring ice immersed in antifreeze colder than 0°C. This way, the ice doesn’t melt and the interface doesn’t move, and it should be possible to make precise observations.”
Even so, the researchers struggled to get good measurements of the ice. “Through various trial and error processes, we found that we had to cool the entire microscope system in a cooling box, and it took some ingenuity to ensure that the atomic force microscope, a precision measuring instrument, could operate stably at sub-zero temperatures,” explains the Kobe University researcher., the group now published their results.
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